// Copyright 2016-2019 DutchSec (https://dutchsec.com/)
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package server

import (
	"net"
)

func tcpMatcher(port int) func(net.Addr) bool {
	return func(a net.Addr) bool {
		if ta, ok := a.(*net.TCPAddr); ok {
			return ta.Port == port
		}

		return false
	}
}

func udpMatcher(port int) func(net.Addr) bool {
	return func(a net.Addr) bool {
		if ta, ok := a.(*net.UDPAddr); ok {
			return ta.Port == port
		}

		return false
	}
}

func noMatcher(net.Addr) bool {
	// won't match
	return false
}
